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GPT-5.4 Pro
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OpenAIOpenAIGPTReleased 2026-03-05

GPT-5.4 Pro

1.1M context$30.00/M input$180.00/M output

GPT-5.4 Pro is OpenAI's most advanced model, designed for complex, high-stakes tasks. It features a unified architecture with enhanced reasoning capabilities, optimized for step-by-step reasoning, instruction following, and accuracy. The model supports a 1M+ token context window (922K input, 128K output) and accepts both text and image inputs, making it suitable for agentic coding, long-context workflows, and multi-step problem solving.

What is GPT-5.4 Pro?

GPT-5.4 Pro is an AI model from OpenAI that Agent Mag tracks for pricing, context window, modalities, benchmarks, and API compatibility. Builders can use this page to compare GPT-5.4 Pro against other models for agent workflows and production deployments.

Model ID

GPT-5.4 Pro is OpenAI's most advanced model, designed for complex, high-stakes tasks. It features a unified architecture with enhanced reasoning capabilities, optimized for step-by-step reasoning, instruction following, and accuracy. The model supports a 1M+ token context window (922K input, 128K output) and accepts both text and image inputs, making it suitable for agentic coding, long-context workflows, and multi-step problem solving.

Architecture & Specifications
Architecture
Unified architecture
Tokenizer
GPT
License
Proprietary
Released
2026-03-05
Modalities
Input
textimagefile
Output
text
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Strengths
  • Enhanced reasoning capabilities for complex tasks
  • Supports text and image inputs
  • Optimized for step-by-step reasoning and instruction following
  • 1M+ token context window for long-context workflows
  • Excels at agentic coding and multi-step problem solving
Limitations
  • High structured output error rate (37.74% for OpenAI provider)
  • Higher latency compared to Azure provider
Recommended Use Cases
Agentic coding
Long-context workflows
Multi-step problem solving
Instruction following
Complex reasoning tasks

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Data enriched Apr 24, 2026. Pricing from OpenRouter API.